Heats of solution of cuprous chloride in aqueous HCl−HClO4 mixtures

Experimental heats of solution of CuCl in aqueous HCl-HClO₄ mixtures have been analyzed using a virial model to represent the effects of solution composition on activity coefficients of all species. The thermodynamics needed for this purpose are described briefly. Optimization of the representation of the data produced values of standard heats of solution to form CuCl₂^– and CuCl₃^2– which agreed with these previously deduced from solubility data, as well as temperature derivatives of the virial parameters. Uses of the resultant information are discussed.